Home / 281.50-557

Finding the Third Proportional to 281.50 and 557

Calculator

Solution

The third proportional to 281.50 and 557 is: 1,102.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.50 : 557 = 557 : x
  2. Step 2: Convert to fraction form
    281.50/557 = 557/x
  3. Step 3: Cross multiply
    281.50x = 557 × 557
  4. Step 4: Simplify right side
    281.50x = 310,249
  5. Step 5: Solve for x
    x = 310,249/281.50
  6. Step 6: Final answer
    x = 1,102.13

Related Problems

Find third proportional to 140.75 and 278.50
Half scale
Find third proportional to 563 and 1,114
Double scale
Find third proportional to 284 and 561
Similar ratio
Find third proportional to 422.25 and 835.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.